Zhang Bo, Xu Jun, Li Chang-Tai, Huang Hong-Liang, Chen Ming-Xing, Yu Mei-Hui, Chang Ze, Bu Xian-He
School of Materials Science and Engineering, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China.
Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, P. R. China.
Angew Chem Int Ed Engl. 2023 Aug 7;62(32):e202303262. doi: 10.1002/anie.202303262. Epub 2023 Jun 28.
Highly adjustable photonic modules were constructed based on the heterostructures crystals of a new series of donor-acceptor metal-organic framework (D-A MOF) featuring highly tunable thermally activated delayed fluorescence (TADF). By introducing N-phenylcarbazole and derivatives as donor guests into the acceptor host NKU-111, highly tunable through-space charge transfer based TADF could be achieved through the engineering of heavy atom effect, which result in modulatable emission wavelength (540 to 600 nm) and enhanced quantum yield (up to 30.86 %). Furthermore, by rationally integrating the D-A MOFs with distinctive emissions, rod-like heterostructures crystals featuring excitation position dependent tip emissions in wide wavelength range (495 to 598 nm) could be fabricated, which could serve as highly potential photonic modules for photonic circuit applications.
基于一系列具有高度可调热激活延迟荧光（TADF）的新型供体-受体金属有机框架（D-A MOF）的异质结构晶体，构建了高度可调的光子模块。通过将N-苯基咔唑及其衍生物作为供体客体引入受体主体NKU-111中，通过重原子效应工程可以实现基于空间电荷转移的高度可调TADF，这导致发射波长可调制（540至600 nm）且量子产率提高（高达30.86%）。此外，通过合理整合具有独特发射的D-A MOF，可以制造出在宽波长范围（495至598 nm）内具有激发位置依赖性尖端发射的棒状异质结构晶体，这可以作为光子电路应用中极具潜力的光子模块。
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